Wire shoe-nail



(N0 Mbdel.)

A. BRIGGS.

WIRE SHOE NAIL.

Patented July 30; 1889.

UNITED STATES PATE T OFFICE.

ADELBERT BRIGGS, OF TAUNTON, MASSACHUSETTS.

WIRE SHOE-NAIL.

SPECIFICATION forming part of Letters Patent N 0. 408,159, dated July 30, 1889.

Application filed November 7, 1888. Serial No. 290,218. (No model.)

To all whom it may concern.-

Be it known that I, ADELBERT BRIGGS, of Taunton, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in \Nire Shoe-Nails, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to provide a wire shoe-nail of an improved construction, by reason of which it is especially adapted for use in the formation of boot and shoe heels where the outer lift is spanked on to the heads of the nails the bodies of which are driven through the other lifts.

My invention is embodied in a wire nail having near its outer end a projecting shoulder or collar, and above this a roughened extension or head adapted to anchor the outer lift of the heel when driven thereon. As represented, the wire body of the nail is somewhat fiattened below the shoulder and the head or extension made wedge-shaped and indented to allow the leather of the outer lift to be forced upon and caused to cling to such heads. A large percentage of the heels used upon cheap shoes are made from upperleather and other soft yielding stock, and such heels are largely attached by machinery, which has the effect to solidify or compress the heel. \Vhen relieved of the pressure, the tendency of the stock is to expand. My improved nail prevents this expansion, the point being clinched on the inner sole, and the collar or shoulder resting upon and holding down the lift next to the blind top lift and preventing the outer lift from being crowded off by the expansion.

In the drawings, Figures 1 and 2 are side and edge elevations of my improved nail, shown on an enlarged scale. Fig. 3 is a perspective representation of the upper portion of the nail, and 4 illustrates the application of the outer lift of the heel to these nailheads.

Shoe-nails having irregularly-shaped heads have heretofore been cut from flat metal plates; but such nails are to be distinguished from mine not only by the inherent differences between cut nails and wire nails, but also by the peculiarities of construction or form which characterize my nails.

The wire body A of the nail is cylindrical and terminates in a defined point B.

C is a shoulder thrown out laterally near the upper end of the nail at the junction of the body and the head. In the nail shown this shoulder is formed by flattening the nailbody below the head, as at D, leaving the shoulders to protrude above the flattenedportions, and also by forcing the metal outlaterally by compression between dies, forming indentations E at and above the shoulder. Between these indentations a vertical rib F is left, which serves greatly to strengthen the nail, giving it at that point a cruciform shape in cross section, which insures it against breaking off in driving or subsequently. The upper part of the head is made wedge-shaped, the converging faces G merging in the blunt edge II, which forms the end or top of the head. Compression of the metal to form these faces forces it out laterally and elongates the edge II, as seen in Figs. 1 and 3, and this, with the indentations E, gives anchorage for the outer lift L of the heel when driven thereon.

I claim as my invention As an improved article of manufacture, the wire shoe-nail described, having an elongated body, laterally-projecting shoulders, cruciform neck, and wedge-pointed head, substantially as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses,on this 31st day of October, A. D. 1888.

.ADELBERI BRIGGS.

Vit-nesses:

JOHN M. GooDwIN, N. O. DEAN. 

